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Interactions of pyridoxine (Vitamin B6) with squaric acid and water. Experimental and theoretical studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Salamzadeh N, Demircioglu Z, Korkmaz U, Büyükgüngör O. Crystal structure of 2-(aza-niumylmeth-yl)pyridinium bis(hydrogen squarate). Acta Crystallogr E Crystallogr Commun 2017; 73:586-589. [PMID: 28435726 PMCID: PMC5382627 DOI: 10.1107/s2056989017004376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 03/20/2017] [Indexed: 11/13/2022]
Abstract
The asymmetric unit of the title compound, C6H10N22+·2C4HO4-, comprises two hydrogen squarate (Hsq-; systematic name: 2-hy-droxy-3,4-dioxo-cyclo-butano-late) anions and a 2-(aza-niumylmeth-yl)pyridinium dication. The squaric acid mol-ecules each donate an H atom to the N atoms of the pyridine ring and the amino-methyl units of a 2-(amino-meth-yl)pyridine mol-ecule, forming the 1:2 salt. The Hsq- anions are linked by strong O-H⋯O hydrogen bonds and an N-H⋯O hydrogen bond links the 2-(aza-niumylmeth-yl)pyridinium cation to one of the squaric acid anions. The crystal structure features additional N-H⋯O and O-H⋯O hydrogen bonds, π-π stacking and unusual weak C-O⋯π(ring) inter-actions.
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Affiliation(s)
- Nina Salamzadeh
- Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Kurupelit, Samsun 55139, Turkey
| | - Zeynep Demircioglu
- Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Kurupelit, Samsun 55139, Turkey
| | - Ufuk Korkmaz
- Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Kurupelit, Samsun 55139, Turkey
| | - Orhan Büyükgüngör
- Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Kurupelit, Samsun 55139, Turkey
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Korkmaz U, Bulut A, Bulut İ. 3-Phenylpyridinium hydrogen squarate: experimental and computational study of a nonlinear optical material. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 140:140-149. [PMID: 25590828 DOI: 10.1016/j.saa.2014.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/20/2014] [Accepted: 12/09/2014] [Indexed: 06/04/2023]
Abstract
The detailed investigation of an organic nonlinear optical (NLO) squarate salt of 3-phenylpyridinium hydrogen squarate (1), C11H10N+·C4HO4(-), was reported in this study. The XRD data indicates that the crystal structure of the title compound is in the triclinic P-1 space group. In the asymmetric unit, the 3-phenylpyridine molecule is protonated by one hydrogen atom donation of squaric acid molecule, forming the salt (1). The X-ray analysis shows that the crystal packing has hydrogen bonding ring pattern of D2(2)(10) (α-dimer) through NH···O interactions. The structural and vibrational properties of the compound were also studied by computational methods of ab initio at DFT/B3LYP/6-31++G(d,p) (2) and HF/6-31++G(d,p) (3) levels of theory. The calculation results on the basis of two models for both the optimized molecular structure and vibrational properties for the 1 are presented and compared with the experimental results. Non-linear optical properties (NLO) of the title compound together with the molecular electrostatic potential (MEP), electronic absorption spectrum, frontier molecular orbitals (FMOs) and conformational flexibility were also studied at the 2 level and the results were reported. In order to evaluate the suitability for NLO applications thermal analysis (TG, DTA and DTG) data of 1 were also obtained.
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Affiliation(s)
- Ufuk Korkmaz
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, Kurupelit, 55139 Samsun, Turkey
| | - Ahmet Bulut
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, Kurupelit, 55139 Samsun, Turkey
| | - İclal Bulut
- Department of Chemistry, Faculty of Engineering, Ondokuzmayıs University, Kurupelit, 55139 Samsun, Turkey
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Korkmaz U, Bulut A. 2-Pyridinium propanol hydrogen squarate: experimental and computational study of a nonlinear optical material. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:1058-1068. [PMID: 25459503 DOI: 10.1016/j.saa.2014.09.130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 06/04/2023]
Abstract
The experimental and theoretical investigation of a novel organic nonlinear optical (NLO) squarate salt of 2-pyridinium propanol hydrogen squarate (1), C8H12ON(+)·C4HO4(-), were reported in this study. The crystal structure of the title compound was found to crystallize in the triclinic P-1 space group. In the asymmetric unit each squaric acid molecules have donated one H atom to the pyridines N1 and N2 atoms of a 2-pyridine propanol molecule, forming the salt (1). The X-ray analysis clearly indicated that the crystal packing has shown the hydrogen bonding ring pattern of D2(2)(10) (α-dimer) through N-H⋯O interactions. The structural and vibrational properties of the compound were also studied by computational methods of ab initio performed on the compound at DFT/B3LYP/6-31++G(d,p) (2) and HF/6-31++G(d,p) (3) level of theory. The calculation results on the basis of two models for both the optimized molecular structure and vibrational properties for the 1 are presented and compared with the X-ray analysis result. The molecular electrostatic potential (MEP), electronic absorption spectra, frontier molecular orbitals (FMOs), conformational flexibility and non-linear optical properties (NLO) of the title compound were also studied at the 2 level and the results are reported. In order to evaluate the suitability for NLO applications thermal analysis (TG, DTA and DTG) data of 1 were also obtained.
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Affiliation(s)
- Ufuk Korkmaz
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, Kurupelit, 55139 Samsun, Turkey
| | - Ahmet Bulut
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, Kurupelit, 55139 Samsun, Turkey
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Korkmaz U, Topçu Y, Taş M, Bulut A. Synthesis, an experimental and quantum chemical computational study: proton sharing in 4-Morpholinium bis(hydrogen squarate). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 134:233-243. [PMID: 25022494 DOI: 10.1016/j.saa.2014.06.100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/05/2014] [Accepted: 06/16/2014] [Indexed: 06/03/2023]
Abstract
The experimental and theoretical investigation results of a novel organic squarate salt of 4-Morpholinium bis(hydrogen squarate) (1), C₆H₁₄ON(+)·C₈H₃O₈(-), were reported in this study. The crystal structure of the title compound was found to crystallize in the triclinic P-1 space group. In the crystals of 1 the morpholine ring adopts the chair conformation with the ethyl group in the equatorial and hydrogen atoms in axial positions. The hydrogen squarate anions are linked into a homoconjugated anion, [(HSQ)₂H], by a short symmetric, nonlinear O₈⋯H₂⋯O₂ hydrogen bond of 2.444 (2)Å. The structural and vibrational properties of the compound were also studied by computational methods of ab-initio performed on the compound at DFT/B3LYP/6-31++G(d,p) (2) and HF/6-31++G(d,p) (3) level of theory. The obtained calculation results on the basis of two models for both the optimized molecular structure and vibrational properties for the 1 obtained are presented and compared with the X-ray analysis result. On the other hand the molecular electrostatic potential (MEP), electronic absorption spectra, frontier molecular orbitals (FMOs), conformational flexibility and non-linear optical properties (NLO) of the title compound were also studied at the 2 level and the results are reported. In order to evaluate the suitability for NLO applications thermal analysis (TG, DTA and DTG) data of 1 were also obtained.
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Affiliation(s)
- Ufuk Korkmaz
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, 55139 Kurupelit, Samsun, Turkey.
| | - Yıldıray Topçu
- Ondokuz Mayıs University, Faculty of Engineering, Chemical Engineering Department, 55139 Kurupelit, Samsun, Turkey
| | - Murat Taş
- Department of Chemistry, Faculty of Arts and Sciences, Giresun University, 28049 Giresun, Turkey
| | - Ahmet Bulut
- Department of Physics, Faculty of Arts and Sciences, Ondokuzmayıs University, 55139 Kurupelit, Samsun, Turkey
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Bartoszak-Adamska E, Dega-Szafran Z, Komasa A, Szafran M. Structural, spectroscopic and computational studies of the 2:1 complex of nipecotic acid with squaric acid. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2014.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Molecular structures of N-ethylpiperidine betaine hydrate and its 1:1 complex with squaric acid. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.09.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dega-Szafran Z, Katrusiak A, Komasa A, Szafran M. Supramolecular structure of the 1:2 complex of 1,4-dimethylpiperazine mono-betaine with squaric acid. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.792342] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Zofia Dega-Szafran
- a Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89B, 61-614, Poznań , Poland
| | - Andrzej Katrusiak
- a Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89B, 61-614, Poznań , Poland
| | - Anna Komasa
- a Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89B, 61-614, Poznań , Poland
| | - Miroslaw Szafran
- a Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89B, 61-614, Poznań , Poland
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Dega-Szafran Z, Katrusiak A, Szafran M. Stable Molecular Complex of Squaric Acid with 2-(Quinuclidinium)propionate. Aust J Chem 2013. [DOI: 10.1071/ch13121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Squaric acid (3,4-dihydroxy-3-cyclobuten-1,2-dione, H2SQ) forms a complex with 2-(quinuclidinium)propionate (QNPr). In crystals, the molecules of H2SQ and zwitterions of QNPr are bridged by two strong non-equivalent O–H⋯O hydrogen bonds of 2.476(2) and 2.482(1) Å. The complex is investigated by X-ray diffraction, FTIR, and NMR techniques, and the results are supported by density functional theory calculations. The solid-state aggregation is consistent with the NMR results, recorded for an aqueous solution, and is also reproduced for the structure optimized at the B3LYP/6-311++G(d,p) level of theory. The calculated IR frequencies for the optimized structure have been used for the assignment of the experimental FTIR spectrum, where the broad absorption at ~2400 cm–1 corresponds to the short asymmetric OH⋯O bonds.
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The 2:2 complex of pyridine betaine with squaric acid studied by X-ray diffraction, FTIR, NMR and DTG methods. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.06.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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